Yarn spool



- E. F. HATHAWAY YARN SPOOL Filed Feb. 15. 1927 March 20, 1928.

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Patented Mar. 20, 1928 UNITED STATES PATENT OFFICE.

EDGAR F. HATHAWAY, OF WELLESLEY, MASSACHUSETTS, ASSIGNOR TO SHAWMUTENGINEERING COMPANY, OF BOSTON, MASSACHUSETTS, A CORPORATION OF MASSA-CHU'SETTS.

YARN SPOOL.

. Application filed February is, 1921. Serial No. 168,324.

This invention relates to yarn spools, particularly the type used inAxminster tube frames in which a disappearing or retractile pintle isused for a supporting journal spool from its bearings. One object of theinvention is to provide an all-metal spool of light, strong and durableconstruction which can be easil made and assembled and which may beeasily disassembled for replacement of the spring or pintle in case ofinjury'or breakage of either of these parts.

In the specific embodiment of this invention illustrated in the drawingsthe yarnspool embraces a tubular barrel having an end head provided withan interior oflset,

annular shoulder fitting inside the barrel, and carrying an axiallydisposed udgeon in which is slidably mounted an axlal bearing pintlewhich is normally spring pressed outward by a spring-whose inner end isseated invention, in which:

Figure l is a plan view chiefly in central section to expose theinterior construction of thespool.

Figure 2 is a side elevation of the detachably interlocked thrustmember.

i ure 3 is an end view of the thrust mem er.

Figure 4 is an elevation of the attaching member that locks the thrustmember to the spring structure.

Figure 5 is an edgewise View of said attaching member as seen at rightangles to the axis of the spool.

In the practice of this invention, according to the form illustrated, atubular metallic barrel 4 is provided and into each end thereof isinserted the offset interior hub portion 2, of an end head 1, which fitssnugly inside the end of the tubular barrel and is secured-thereto bsoldering or any other suitable manner. T 1e inner edge portion of theouter shoulder is turned inward to form a flat flange portion 3, whichis centrally perforated to permit the insertion of a suitable shoulderedbearing gudgeon.

As it is unnecessary that both ends of the spool should have aretractile pintle or'journal, the fixed journal at one end comprises ashouldered head 10, inserted through the flat annular flange 3, with itsinner end 10 headed over the edge of the flange or, in this case asactually shown, over. the head of a stifiening washer 9, while the outerend of the .gndgeon 10 is reduced, as shown at 10k to form apintlejournal.

t the opposite end of the spool the in- 1 turned centrally, bored flan e3 receives a shouldered gudgeon 5 to WlllCll it is secured in a somewhatsimilar fashion. This gudgeon, however, is pentrally bored to receive aslidingly mounted elon ated pintle 6, provided with a stop shoulder 6,against which presses an. outwardly thrusting helical spring 6 Toprovide a convenient means for sustaining the inward thrust of thepintle spring 6", I provide a thrust member 8 of novel constructionintended to be detachably locked to the gudgeon or spool structure atits outer end so as to permit easy replacement of the spring or/thepintle in case of injury toeither.

This thrust member 8 has a longitudinal bod portion terminating. in twosubstantial y right an led wings 8 "and 8", the former of whic is cutaway, as shown in Figure 3, to form the wing into attaching jaws. Thelatter wing 8 is erforated, the perforation preferably being imensionedto form a bearing openin for the inner end of the pintle 6, and a ords aseat for sustaining the thrust of the inner end of the pintle spring 6".

For stiffening purposes a washer 9, surrounding the neck of the gudgeon5, is preferably employed and on the inner side of said washer anattaching member 7 is placed for the purpose of interlocking the thrustmember 8 to the gudgeon and spool. This attaching member comprises acenter washer-like body portion 7, adapted to fit snugly over the neckof the gudgeon 5, and having on opposite sides offset projectlng Wings7*. The center portion is dimensioned to allow the jaws 8 of the thrustmember to straddle when the jaws are inserted between the offset lockinglips 7 and the adjacent plane surface of the stiffening washer 9.

The gudgeon is fastened in place after its neck portion has beeninserted through the flange 3, the washer 9, when such washer is used,and the locking washer 7, and the end of gudgeon is then headed over theedge of the washer 7 to hold these three members firmly together andthereby rigidly support the gudgeon in its axial position. The pintle,with its surrounding spring, is then inserted through the gudgeon andthe thrust member placed with its inner wing 8 surrounding the inner endof the pintle after which it may be moved along the pintle to compressthe spring and hook its spaced jaws 8 between the wing '2' of the washer7 and the adjacent face of the washer 9. Having been thus assembled thehead with its connected parts is inserted inside the hollow end of thetube and there soldered in place.

In case of injury to the spring or pintle the head may be unsoldered andwithdrawn, the thrust member may then be disengaged from the Wings ofthe attaching member to permit the withdrawal of the spring and of thepintle and their replacement. The thrust member may be given any desiredlength to accommodate any desired length of thrust spring, and mayconveniently serve as'an inner bearing support having a long leverageengagement with the inner end of the pintle to aid in preserving itsaxial align ment. It will be observed that when the assembled parts areinserted and secured in the barrel that displacement of the thrustmember is impossible by reason of the engagement of the flat transversebody portion 8 with the flat edge portion of the washer 7. The partsbeing confined within'the barrel, the rotation of the thrust memberrelative .to the attaching washer isprevented by this engagement.

What I claim is:

1. In a yarn spool, the combination with a tubular barrel, an end headhaving an interior annular hub portion with an inturned centrallyperforated flange, an axially disposed longitudinally bored gudgeonhaving its inner end portion reduced to form a neck fitting into theaperture in said flange, a spring pressed pintle slidable in said bore,an attaching member also surrounding the inner end of the gudgeon andhaving pereeaaos ripheral laterally ofiset wings, a thrust member havingat its outer end detachable locking engagement with said wings andhaving a transverse portion arranged to form a seat for sustaining theinner end of the pintle-pressing spring.

2. In a yarn spool, the combination with a tubular barrel, a transverseend head secured thereto, an axially disposed longitudinally boredgudgeon rigidly secured in a .central aperture in said end head toproject through the aperture, an axially slidable pintle mounted in saidbore of the gudgeon, a helical spring acting to normally press saidpintle outward to normal spool-supporting position, and a thrust memberdetachably se cured to the inner end of the gudgeolrafnd affording atits inner end 'a seat for the inner end of the spring to supportthethrust thereof.

3. In a yarn spool, the eombinationfwith a tubular barrel and atransverse disk like head rigidly secured thereto, an axially disposedaxially bored gudgeon firmly secured in a central aperture ofsaid head,an axial shouldered pintle slidably mounted in said gudgeon bore and aspring normally pressing said pintle outward, a thrust member projectinginwardly from the inner end of said gudgeon and having at its outer endattaching jaws arranged to detachably interlock with coordinated lockingwings rigidly secured to the inner end of the gudgeon and having, at itsrear end, a transverse member bored to receive the inner end of thepintle and forming a thrust seat for the inner end of the pintle spring.

4. In a yarn-spool for tube frames or the like, the combination with abarrel, of an end head provided with an interiorly located axiallyotl'set centrally perforated hub portion securely fastened in a hollowend of the barrel, an axially bored gudgeon whose inner end is insertedthrough the aperture in said hub and is provided with opposing shoulderson opposite sides of the hub preventing its axial displacement, aspringpressed pintle slidably mounted in the bore of said gudgeon, and athrust member interlockingly connected with and supported by said hubprojecting inwardly therefrom in position to sustain the inward thrustof the pintle-actuating spring.

In witness whereof, I have subscribed the above specification.

EDGAR F. HATHAVVAY.

